A fluororubber composition that is a kneaded mixture of a carbon nanotube masterbatch comprising 4 to 20 parts by weight of multilayer carbon nanotubes, which are fibrous carbon nanostructures that do not contain monolayer carbon nanotubes, based on 100 parts by weight of a fluororubber polymer, and a fluororubber raw material comprising at least a fluororubber polymer and a reinforcing filler, in which the multilayer carbon nanotubes are compounded in an amount of 0.5 to 6 wt. % in the kneaded mixture. The kneading is performed using a roll or a kneader when the fluororubber composition is produced. The fluororubber composition can provide a fluororubber crosslinked molded article that exhibits abrasion resistance and blister resistance.

An amino silicone oil-modified elastomer material includes Component A and Component R. Component A includes isocyanate prepolymer obtained through reaction of polyol and isocyanate, and the isocyanate prepolymer has a —NCO content of 22-30%; Component R includes the following components in parts by weight: 45-60 parts of polyether amine, 1-6 parts of liquid amine chain extender, 1-10 parts of polysulfide rubber, 2-8 parts of nano silica, and 3-8 parts of amino silicone oil. The elastomer material of the invention ensures the elasticity of the polymer while improving mechanical properties. Moreover, it can improve elongation, wear resistance and water resistance of the polyurea material.

The invention relates to a pipe comprising a polypropylene composition (P) comprising a terpolymer composition (A), a nucleating agent (B) and optionally a composition comprising pigment (C), wherein the terpolymer composition (A) comprises at least one terpolymer prepared from propylene, ethylene and 1-hexene, wherein the nucleating agent (B) is a nucleating agent comprising a metal salt of hexahydrophthalic acid represented by formula (I) (I) wherein M1 and M2 are the same or different, and may be combined into one cation, and are selected from at least one metal cation of calcium, strontium, lithium, and monobasic aluminum; and wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, and R.sub.10 are either the same or different and are individually selected from the group consisting of hydrogen, C.sub.1-C.sub.9 alkyl, hydroxy, C1-C9alkoxy, C.sub.1-C.sub.9 alkyleneoxy, amine, and C.sub.1-C.sub.9 alkylamine, halogens, and phenyl wherein the polypropylene composition (P) has a melt flow rate in the range from 0.10 to 0.70 dg/min as determined by ISO1133-1:2011 at 230° C. and 2.16 kg.

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The present disclosure provides a composition. The composition is crosslinkable and includes an ethylene silane-copolymer, an oil-extended ethylene-propylene-diene monomer (EPDM), and a crosslink catalyst. The present disclosure also provides the composition after crosslinking. In an embodiment, a crosslinked composition is provided and includes from 55 wt % to 85 wt % of an ethylene-silane copolymer and from 15 wt % to 45 wt % of an oil-extended EPDM. The crosslinked composition has: (a) a flexural modulus of 50 MPa to 160 MPa; and (b) a hot set elongation greater than 10%. The crosslinked composition can be used as a coating for a coated conductor.

An elastomeric material is disclosed, which is suitable, in particular, as a sealing material between the fuel cells of a fuel cell stack and the stacks as such, wherein the hybrid elastomeric material includes a hybrid elastomer with a proportion of a siloxane polymeric material and a proportion of a polyolefin elastomeric material, wherein the two materials are crosslinked with one another by addition. Further aspects relate to polyelectrolyte fuel cells, which include sealing elements made of the hybrid elastomeric material, as well as the use of the hybrid elastomeric material in a screen printing process.

The present application relates to a chain extender masterbatch for PET extrusion foaming, preparation method therefor, and a use thereof. The masterbatch is mainly prepared by the following components in parts by weight: 5-30 parts of PMDA, 25-90 parts of PBT, 5-70 parts of POE+POE-g-GMA, in which POE accounts for 0-85% of POE+POE-g-GMA by weight; a melting temperature of PBT is 170-225° C. The preparation method includes melting and mixing the above components at a melting temperature of 180-230° C. and a screw speed of 100-500 rpm, and air cooling strand granulating or air cooling die face granulating. The masterbatch can be used in foaming processes of fiber grade PET, film grade PET, bottle grade PET, engineering plastic grade PET and recycled PET.

A conductive polyester composition is provided, which includes a polyester base material and a conductive reinforcing material. The conductive reinforcing material includes a plurality of carbon nanotubes, and the plurality of carbon nanotubes are dispersed in the polyester base material. In each of the carbon nanotubes, a length of the carbon nanotube is defined as L, a diameter of the carbon nanotube is defined as D and is between 1 nanometer and 30 nanometers, and an L/D value of the carbon nanotube is between 300 and 2,000. The plurality of carbon nanotubes are in contact with each other to form a plurality of contact points, so that the conductive polyester composition has a surface impedance of not greater than 10.sup.7 Ω/sq.

A liquid color masterbatch composition for fabricating a colored fiber includes 30.0 to 44.4 parts by weight of a colorant, 14.0 to 44.4 parts by weight of a lubricant, and 11.2 to 56.0 parts by weight of a carrier, in which a viscosity of the liquid color masterbatch composition between 13000 cP and 18000 cP.

A blown film of soil biodegradable aliphatic polyesters produced primarily from diacid and diol monomers. The diacid monomers may be of any type including succinic acid, adipic acid, and hexanedioic acid. The diol monomer may be of any type including ethylene glycol, propanediol, butanediol, and hexanediol. Commercial aliphatic polyesters produced from diacid and diol monomers include polybutylene succinate (PBS), polybutylene adipate succinate (PBAS), and polybutylene adipate (PBA). Comonomers may also be added. Such comonomers include chemicals with a single carboxylic acid, hydroxy, or amine moiety, which act as chain terminators, chemicals with three or more carboxylic acid, epoxy, and/or hydroxy moieties which, act as branching agents.

The claimed material relates to a mixed silica and silicate fiber and polymer composite having enhanced modulus, viscoelastic and rheological properties.